test_file2k.py 文件源码

def test_write_full(self):
        devfull = '/dev/full'
        if not (os.path.exists(devfull) and
                stat.S_ISCHR(os.stat(devfull).st_mode)):
            # Issue #21934: OpenBSD does not have a /dev/full character device
            self.skipTest('requires %r' % devfull)
        with open(devfull, 'wb', 1) as f:
            with self.assertRaises(IOError):
                f.write('hello\n')
        with open(devfull, 'wb', 1) as f:
            with self.assertRaises(IOError):
                # Issue #17976
                f.write('hello')
                f.write('\n')
        with open(devfull, 'wb', 0) as f:
            with self.assertRaises(IOError):
                f.write('h')